[1] Cheng Y. Photonic integrated circuits on lithium niobate: today′s fundamental research for tomorrow′s industry[J]. Physics, 49, 277-284(2020).

[2] Li G L, Jia Y C, Chen F. Research progress of photonics devices on lithium-niobate-on-insulator thin films[J]. Acta Physica Sinica, 69, 157801(2020).

[3] Wei X, Kesse S. Heterogeneously integrated photonic chip on lithium niobate thin-film waveguide[J]. Crystals, 11, 1376(2021).

[4] Snigirev V, Riedhauser A, Lihachev G et al. Ultrafast tunable lasers using lithium niobate integrated photonics[J]. Nature, 615, 411-417(2023).

[5] Wang C, Zhang M, Chen X et al. Integrated lithium niobate electro-optic modulators operating at CMOS-compatible voltages[J]. Nature, 562, 101-104(2018).

[6] Liu Z X, Zeng C, Xia J S. Research progress on high-linearity electro-optical modulators[J]. Chinese Journal of Lasers, 49, 1206001(2022).

[7] Shams-Ansari A, Renaud D, Cheng R et al. Electrically pumped laser transmitter integrated on thin-film lithium niobate[J]. Optica, 9, 408-411(2022).

[8] Yoo S, Park H, Lee J C et al. 53 GBd PAM-4 fully-integrated silicon photonics transmitter with a hybrid flip-chip bonded laser[J]. Optics Express, 30, 41980-41998(2022).

[9] Haq B, Vaskasi J R, Zhang J et al. Micro-transfer-printed III-V-on-silicon C-band distributed feedback lasers[J]. Optics Express, 28, 32793-32801(2020).

[10] Op de Beeck C, Haq B, Elsinger L et al. Heterogeneous III-V on silicon nitride amplifiers and lasers via microtransfer printing[J]. Optica, 7, 386-393(2020).

[11] Zhang X, Liu X Y, Liu L et al. Heterogeneous integration of III–V semiconductor lasers on thin-film lithium niobite platform by wafer bonding[J]. Applied Physics Letters, 122, 081103(2023).

[12] Ou X P, Yang Z L, Tang B et al. Silicon photonic 2.5D/3D integration technology and its applications[J]. Study on Optical Communications, 1-16(2023).

[13] Almeida V R, Panepucci R R, Lipson M. Nanotaper for compact mode conversion[J]. Optics Letters, 28, 1302-1304(2003).

[14] Ying P, Tan H Y, Zhang J W et al. Low-loss edge-coupling thin-film lithium niobate modulator with an efficient phase shifter[J]. Optics Letters, 46, 1478-1481(2021).

[15] Wu D, Yan W, Yang Y C et al. A theoretical sub-0.1 dB loss single mode fiber-to-chip edge coupler for silicon nitride waveguides[J]. Photonics, 10, 231(2023).

[16] Ma H B, Liu X R, He Q et al. Theoretical treatments for the butt-coupling characteristics of fibers[J]. International Journal of Optomechatronics, 6, 120-129(2012).